Museum dose is somewhere between art gallery dose and planetarium dose. Under forest explorer dose and way under isolated beach dose.

At least in the LSD world it is said that 10mcg is a microdose, 20-50mcg is a museum dose (meaning, you can appreciate and navigate a museum while being acutely affected by the effects of the psychedelic, but not to a degree that it's overwhelming/debilitating. Anything north of 100mcg is a "proper" recreational dose, and a heroic dose I believe is anything from 300mcg upwards (very dependant on person, experience, tolerance).